/* ============================================
   QUANTUM AI BIOMEDICAL IMAGING ACADEMY
   Premium MedTech Campus Styles
   ============================================ */

/* ------------------------------------------
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ------------------------------------------ */
:root {
    /* Core Colors */
    --color-navy-900: #0a0e27;
    --color-navy-800: #0f1535;
    --color-navy-700: #161f4a;
    --color-navy-600: #1e2a5e;
    --color-navy-500: #2d3a6e;

    /* Cyan Accents */
    --color-cyan-400: #22d3ee;
    --color-cyan-300: #67e8f9;
    --color-cyan-200: #a5f3fc;
    --color-cyan-500: #06b6d4;

    /* White & Gray Scale */
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-cyan-400) 0%, var(--color-cyan-500) 100%);
    --gradient-hero: linear-gradient(135deg, #0a0e27 0%, #1e2a5e 50%, #0f1535 100%);
    --gradient-text: linear-gradient(90deg, var(--color-cyan-300) 0%, var(--color-cyan-400) 50%, var(--color-white) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 100%);

    /* Glassmorphism */
    --glass-bg: rgba(15, 21, 53, 0.6);
    --glass-border: rgba(34, 211, 238, 0.15);
    --glass-blur: 20px;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', var(--font-primary);
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Animation */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --duration-fast: 150ms;
    --duration-normal: 300ms;
    --duration-slow: 500ms;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.3), 0 2px 4px -2px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.3), 0 4px 6px -4px rgba(0,0,0,0.3);
    --shadow-glow: 0 0 40px rgba(34, 211, 238, 0.15);

    /* Layout */
    --container-max: 1280px;
    --container-padding: var(--space-6);
    --nav-height: 72px;
}

/* ------------------------------------------
   2. RESET & BASE STYLES
   ------------------------------------------ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-gray-200);
    background: var(--color-navy-900);
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

img, svg {
    display: block;
    max-width: 100%;
}

ul, ol {
    list-style: none;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ------------------------------------------
   3. UTILITY CLASSES
   ------------------------------------------ */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-cyan-400);
    margin-bottom: var(--space-4);
}

.section-label::before {
    content: '';
    width: 24px;
    height: 2px;
    background: var(--gradient-primary);
}

.section-title {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 700;
    line-height: 1.15;
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-400);
    max-width: 600px;
    line-height: 1.7;
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass-card {
    background: var(--gradient-glass);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: 16px;
}

/* ------------------------------------------
   4. BUTTONS
   ------------------------------------------ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: 12px;
    transition: all var(--duration-normal) var(--ease-out-expo);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-navy-900);
    box-shadow: 0 4px 14px rgba(34, 211, 238, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(34, 211, 238, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(34, 211, 238, 0.1);
    border-color: var(--color-cyan-400);
}

.btn-small {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
}

.btn-full {
    width: 100%;
}

.btn-icon {
    width: 16px;
    height: 16px;
    transition: transform var(--duration-normal) var(--ease-out-expo);
}

.btn:hover .btn-icon {
    transform: translateX(3px);
}

/* ------------------------------------------
   5. NAVIGATION
   ------------------------------------------ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    transition: all var(--duration-normal) var(--ease-in-out);
}

.navbar.scrolled {
    background: rgba(10, 14, 39, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-white);
}

.logo-icon {
    width: 36px;
    height: 36px;
    color: var(--color-cyan-400);
}

.logo-accent {
    color: var(--color-cyan-400);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    position: relative;
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-300);
    padding: var(--space-2) 0;
    transition: color var(--duration-normal);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--duration-normal) var(--ease-out-expo);
}

.nav-link:hover {
    color: var(--color-white);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    position: relative;
    transition: all var(--duration-normal);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: all var(--duration-normal);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    top: 8px;
}

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.nav-toggle.active .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
}

/* ------------------------------------------
   6. HERO SECTION
   ------------------------------------------ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--nav-height) + var(--space-12)) var(--container-padding) var(--space-16);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
}

.scan-line {
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-cyan-400), transparent);
    opacity: 0.3;
    animation: scanMove 8s linear infinite;
}

.scan-line:nth-child(1) {
    top: 20%;
    animation-delay: 0s;
}

.scan-line:nth-child(2) {
    top: 50%;
    animation-delay: -2.6s;
    opacity: 0.2;
}

.scan-line:nth-child(3) {
    top: 80%;
    animation-delay: -5.3s;
    opacity: 0.25;
}

@keyframes scanMove {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.hologram-ring {
    position: absolute;
    border: 1px solid rgba(34, 211, 238, 0.1);
    border-radius: 50%;
    animation: ringPulse 4s ease-in-out infinite;
}

.ring-1 {
    width: 400px;
    height: 400px;
    top: 10%;
    right: 15%;
    animation-delay: 0s;
}

.ring-2 {
    width: 300px;
    height: 300px;
    top: 20%;
    right: 20%;
    animation-delay: -1.3s;
}

.ring-3 {
    width: 200px;
    height: 200px;
    top: 30%;
    right: 25%;
    animation-delay: -2.6s;
}

@keyframes ringPulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.05); opacity: 0.6; }
}

.particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--color-cyan-400);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat 6s ease-in-out infinite;
}

@keyframes particleFloat {
    0% { opacity: 0; transform: translateY(100vh) scale(0); }
    10% { opacity: 0.8; }
    90% { opacity: 0.8; }
    100% { opacity: 0; transform: translateY(-100px) scale(1); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 680px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(34, 211, 238, 0.1);
    border: 1px solid rgba(34, 211, 238, 0.2);
    border-radius: 100px;
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-cyan-300);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-6);
}

.badge-pulse {
    width: 8px;
    height: 8px;
    background: var(--color-cyan-400);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
    font-family: var(--font-display);
    font-size: var(--text-5xl);
    font-weight: 700;
    line-height: 1.1;
    color: var(--color-white);
    margin-bottom: var(--space-6);
}

.hero-subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-400);
    line-height: 1.7;
    margin-bottom: var(--space-8);
    max-width: 540px;
}

.hero-cta {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: var(--space-10);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.stat-number {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1;
}

.stat-number::after {
    content: '+';
    font-size: var(--text-lg);
    color: var(--color-cyan-400);
    margin-left: 2px;
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Hero Visual - Brain Scan */
.hero-visual {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}

.brain-scan {
    position: relative;
    width: 400px;
    height: 500px;
}

.scan-container {
    position: relative;
    width: 300px;
    height: 380px;
    margin: 0 auto;
}

.scan-layer {
    position: absolute;
    inset: 0;
    border: 1px solid rgba(34, 211, 238, 0.15);
    border-radius: 50% 50% 45% 45%;
    animation: layerRotate 8s linear infinite;
}

.layer-1 {
    border-color: rgba(34, 211, 238, 0.3);
    animation-duration: 12s;
}

.layer-2 {
    border-color: rgba(34, 211, 238, 0.2);
    transform: scale(0.85);
    animation-duration: 10s;
    animation-direction: reverse;
}

.layer-3 {
    border-color: rgba(34, 211, 238, 0.1);
    transform: scale(0.7);
    animation-duration: 8s;
}

@keyframes layerRotate {
    0% { transform: rotateY(0deg); }
    100% { transform: rotateY(360deg); }
}

.scan-cursor {
    position: absolute;
    top: 0;
    left: 50%;
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, transparent, var(--color-cyan-400), transparent);
    animation: cursorScan 3s ease-in-out infinite;
    transform: translateX(-50%);
}

@keyframes cursorScan {
    0%, 100% { top: 0; opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
}

.scan-data {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-4);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: 12px;
}

.data-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-2) 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.data-row:last-child {
    border-bottom: none;
}

.data-label {
    font-family: var(--font-display);
    font-size: var(--text-xs);
    color: var(--color-gray-500);
    letter-spacing: 0.05em;
}

.data-value {
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-cyan-400);
}

/* ------------------------------------------
   7. ABOUT SECTION
   ------------------------------------------ */
.about {
    padding: var(--space-24) 0;
    position: relative;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.about-text {
    font-size: var(--text-lg);
    color: var(--color-gray-400);
    line-height: 1.8;
    margin-bottom: var(--space-6);
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
    margin-top: var(--space-8);
}

.feature {
    display: flex;
    gap: var(--space-4);
    align-items: flex-start;
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(34, 211, 238, 0.1);
    border: 1px solid rgba(34, 211, 238, 0.2);
    border-radius: 12px;
    color: var(--color-cyan-400);
    flex-shrink: 0;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-info h4 {
    font-family: var(--font-display);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-1);
}

.feature-info p {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    line-height: 1.6;
}

.about-visual {
    position: relative;
}

.academy-card {
    padding: var(--space-6);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-6);
}

.card-dots {
    display: flex;
    gap: var(--space-2);
}

.card-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-gray-600);
}

.card-dots span:first-child {
    background: #ef4444;
}

.card-dots span:nth-child(2) {
    background: #f59e0b;
}

.card-dots span:nth-child(3) {
    background: #22c55e;
}

.card-status {
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-cyan-400);
    padding: var(--space-1) var(--space-3);
    background: rgba(34, 211, 238, 0.1);
    border-radius: 100px;
}

.academy-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.metric {
    text-align: center;
    padding: var(--space-4);
    background: rgba(255,255,255,0.03);
    border-radius: 12px;
}

.metric-value {
    display: block;
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1;
    margin-bottom: var(--space-1);
}

.metric-unit {
    font-size: var(--text-xs);
    color: var(--color-gray-500);
}

.academy-chart {
    padding: var(--space-4);
    background: rgba(255,255,255,0.03);
    border-radius: 12px;
}

.chart-bars {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--space-3);
    height: 120px;
    padding-bottom: var(--space-4);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.bar {
    flex: 1;
    background: var(--gradient-primary);
    border-radius: 4px 4px 0 0;
    height: var(--height);
    opacity: 0.7;
    transition: opacity var(--duration-normal);
    animation: barGrow 1.5s var(--ease-out-expo) forwards;
    animation-delay: calc(var(--i, 0) * 0.1s);
    transform-origin: bottom;
}

@keyframes barGrow {
    from { transform: scaleY(0); }
    to { transform: scaleY(1); }
}

.bar:hover {
    opacity: 1;
}

.chart-labels {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-2);
}

.chart-labels span {
    font-size: var(--text-xs);
    color: var(--color-gray-500);
}

/* ------------------------------------------
   8. SYSTEMS SECTION
   ------------------------------------------ */
.systems {
    padding: var(--space-24) 0;
    background: linear-gradient(180deg, var(--color-navy-900) 0%, var(--color-navy-800) 50%, var(--color-navy-900) 100%);
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--space-16);
}

.systems-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.system-card {
    padding: var(--space-8);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    transition: all var(--duration-normal) var(--ease-out-expo);
}

.system-card:hover {
    transform: translateY(-4px);
    border-color: rgba(34, 211, 238, 0.3);
    box-shadow: var(--shadow-glow);
}

.system-icon {
    width: 64px;
    height: 64px;
    color: var(--color-cyan-400);
    margin-bottom: var(--space-5);
}

.system-icon svg {
    width: 100%;
    height: 100%;
}

.system-title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-3);
}

.system-desc {
    font-size: var(--text-base);
    color: var(--color-gray-400);
    line-height: 1.7;
    margin-bottom: var(--space-5);
}

.system-tags {
    display: flex;
    gap: var(--space-2);
}

.tag {
    padding: var(--space-1) var(--space-3);
    background: rgba(34, 211, 238, 0.1);
    border: 1px solid rgba(34, 211, 238, 0.2);
    border-radius: 100px;
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-cyan-300);
}

/* ------------------------------------------
   9. PROGRAMS SECTION
   ------------------------------------------ */
.programs {
    padding: var(--space-24) 0;
}

.programs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.program-card {
    position: relative;
    padding: var(--space-8);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    transition: all var(--duration-normal) var(--ease-out-expo);
}

.program-card:hover {
    transform: translateY(-4px);
    border-color: rgba(34, 211, 238, 0.3);
}

.program-card.featured {
    border-color: rgba(34, 211, 238, 0.4);
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.05) 0%, var(--glass-bg) 100%);
}

.program-badge {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    padding: var(--space-1) var(--space-3);
    background: var(--gradient-primary);
    color: var(--color-navy-900);
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 700;
    border-radius: 100px;
}

.program-header {
    margin-bottom: var(--space-5);
}

.program-icon {
    width: 48px;
    height: 48px;
    color: var(--color-cyan-400);
    margin-bottom: var(--space-4);
}

.program-icon svg {
    width: 100%;
    height: 100%;
}

.program-title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-2);
}

.program-duration {
    font-size: var(--text-sm);
    color: var(--color-cyan-400);
    font-weight: 500;
}

.program-desc {
    font-size: var(--text-base);
    color: var(--color-gray-400);
    line-height: 1.7;
    margin-bottom: var(--space-5);
}

.program-curriculum {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.program-curriculum li {
    position: relative;
    padding-left: var(--space-6);
    font-size: var(--text-sm);
    color: var(--color-gray-300);
}

.program-curriculum li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 16px;
    height: 16px;
    background: rgba(34, 211, 238, 0.1);
    border: 1px solid rgba(34, 211, 238, 0.3);
    border-radius: 4px;
}

.program-curriculum li::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 12px;
    width: 6px;
    height: 6px;
    background: var(--color-cyan-400);
    border-radius: 1px;
    transform: rotate(45deg);
}

.program-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.program-price {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-white);
}

/* ------------------------------------------
   10. IMAGING LAB SECTION
   ------------------------------------------ */
.imaging-lab {
    padding: var(--space-24) 0;
    background: linear-gradient(180deg, var(--color-navy-900) 0%, var(--color-navy-800) 100%);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.project-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-out-expo);
}

.project-card:hover {
    transform: translateY(-6px);
    border-color: rgba(34, 211, 238, 0.3);
    box-shadow: var(--shadow-glow);
}

.project-visual {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.project-scan {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}

.project-scan.brain {
    background: linear-gradient(135deg, #1e3a5f 0%, #0f1535 100%);
}

.project-scan.chest {
    background: linear-gradient(135deg, #2d4a3e 0%, #0f1535 100%);
}

.project-scan.pathology {
    background: linear-gradient(135deg, #5f3a4a 0%, #0f1535 100%);
}

.project-scan.cardiac {
    background: linear-gradient(135deg, #3a4a5f 0%, #0f1535 100%);
}

.project-scan.retinal {
    background: linear-gradient(135deg, #3a5f4a 0%, #0f1535 100%);
}

.project-scan.surgical {
    background: linear-gradient(135deg, #5f4a3a 0%, #0f1535 100%);
}

.scan-overlay {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(34, 211, 238, 0.03) 2px,
        rgba(34, 211, 238, 0.03) 4px
    );
    animation: scanScroll 2s linear infinite;
}

@keyframes scanScroll {
    0% { transform: translateY(0); }
    100% { transform: translateY(4px); }
}

.scan-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(34, 211, 238, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(34, 211, 238, 0.08) 1px, transparent 1px);
    background-size: 20px 20px;
}

.project-scan-data {
    position: absolute;
    top: var(--space-3);
    left: var(--space-3);
    display: flex;
    gap: var(--space-2);
}

.scan-tag, .scan-dim {
    padding: var(--space-1) var(--space-2);
    background: rgba(0,0,0,0.6);
    border-radius: 4px;
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-cyan-400);
}

.project-info {
    padding: var(--space-6);
}

.project-title {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-2);
}

.project-desc {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
    line-height: 1.6;
    margin-bottom: var(--space-4);
}

.project-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.project-author {
    font-size: var(--text-sm);
    color: var(--color-gray-300);
}

.project-year {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

/* ------------------------------------------
   11. CONTACT SECTION
   ------------------------------------------ */
.contact {
    padding: var(--space-24) 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: start;
}

.contact-desc {
    font-size: var(--text-lg);
    color: var(--color-gray-400);
    line-height: 1.7;
    margin-bottom: var(--space-8);
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    transition: all var(--duration-normal);
}

.contact-method:hover {
    border-color: rgba(34, 211, 238, 0.3);
    transform: translateX(4px);
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(34, 211, 238, 0.1);
    border-radius: 12px;
    color: var(--color-cyan-400);
    flex-shrink: 0;
}

.contact-icon svg {
    width: 20px;
    height: 20px;
}

.contact-detail {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.contact-label {
    font-size: var(--text-xs);
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-value {
    font-family: var(--font-display);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-white);
}

.contact-social {
    display: flex;
    gap: var(--space-3);
}

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--color-gray-400);
    transition: all var(--duration-normal);
}

.social-link:hover {
    color: var(--color-cyan-400);
    border-color: rgba(34, 211, 238, 0.3);
    transform: translateY(-2px);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.contact-form-wrapper {
    position: sticky;
    top: calc(var(--nav-height) + var(--space-6));
}

.contact-form {
    padding: var(--space-8);
}

.form-group {
    margin-bottom: var(--space-5);
}

.form-group label {
    display: block;
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-300);
    margin-bottom: var(--space-2);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 10px;
    color: var(--color-white);
    font-size: var(--text-base);
    transition: all var(--duration-normal);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-cyan-400);
    background: rgba(34, 211, 238, 0.05);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-gray-600);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-4) center;
}

.form-group select option {
    background: var(--color-navy-800);
    color: var(--color-white);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* ------------------------------------------
   12. FOOTER
   ------------------------------------------ */
.footer {
    padding: var(--space-16) 0 var(--space-8);
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-brand .logo {
    margin-bottom: var(--space-4);
}

.footer-tagline {
    font-size: var(--text-base);
    color: var(--color-gray-500);
    max-width: 280px;
    line-height: 1.6;
}

.footer-links h4 {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-5);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-links a {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    transition: color var(--duration-normal);
}

.footer-links a:hover {
    color: var(--color-cyan-400);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-bottom p {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

.footer-location {
    font-family: var(--font-display);
}

/* ------------------------------------------
   13. ANIMATIONS & SCROLL REVEAL
   ------------------------------------------ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s var(--ease-out-expo);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ------------------------------------------
   14. RESPONSIVE DESIGN
   ------------------------------------------ */
@media (max-width: 1024px) {
    .hero-visual {
        display: none;
    }

    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }

    .about-visual {
        order: -1;
    }

    .systems-grid,
    .programs-grid {
        grid-template-columns: 1fr;
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --text-5xl: var(--text-4xl);
        --text-4xl: var(--text-3xl);
        --container-padding: var(--space-4);
    }

    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(10, 14, 39, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--space-8);
        transform: translateX(100%);
        transition: transform var(--duration-normal) var(--ease-out-expo);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-link {
        font-size: var(--text-xl);
    }

    .nav-toggle {
        display: block;
    }

    .hero-stats {
        gap: var(--space-6);
    }

    .stat-number {
        font-size: var(--text-2xl);
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .contact-form-wrapper {
        position: static;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }

    .hero-stats {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

/* ------------------------------------------
   15. ACCESSIBILITY
   ------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* Focus styles */
:focus-visible {
    outline: 2px solid var(--color-cyan-400);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: rgba(34, 211, 238, 0.3);
    color: var(--color-white);
}